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use procfs::process::{FDTarget, Process};
use rustix::fs::AtFlags;
use std::path::Path;
fn main() {
let myself = Process::myself().unwrap();
let mountinfo = myself.mountinfo().unwrap();
println!("{:18}{:13}{:13}{:13}{:12} Path", "Process", "PID", "Lock Type", "Mode", "Kind");
println!("{}", "=".repeat(74));
for lock in procfs::locks().unwrap() {
lock.pid
.and_then(|pid| Process::new(pid).ok())
.and_then(|proc| proc.cmdline().ok())
.and_then(|mut cmd| cmd.drain(..).next())
.map_or_else(
|| {
print!("{:18}", "(undefined)");
},
|s| {
let p = Path::new(&s);
print!("{:18}", p.file_name().unwrap_or(p.as_os_str()).to_string_lossy());
},
);
print!("{:<12} ", lock.pid.unwrap_or(-1));
print!("{:12} ", lock.lock_type.as_str());
print!("{:12} ", lock.mode.as_str());
print!("{:12} ", lock.kind.as_str());
// try to find the path for this inode
let mut found = false;
if let Some(pid) = lock.pid {
if let Ok(fds) = Process::new(pid).and_then(|p| p.fd()) {
for f in fds {
let fd = f.unwrap();
if let FDTarget::Path(p) = fd.target {
if let Ok(stat) = rustix::fs::statat(&rustix::fs::CWD, &p, AtFlags::empty()) {
if stat.st_ino as u64 == lock.inode {
print!("{}", p.display());
found = true;
break;
}
}
}
}
}
}
if !found {
// we don't have a PID or we don't have permission to inspect the processes files, but we still have the device and inode
// There's no way to look up a path from an inode, so just bring the device mount point
for mount in &mountinfo {
if format!("{}:{}", lock.devmaj, lock.devmin) == mount.majmin {
print!("{}...", mount.mount_point.display());
found = true;
break;
}
}
}
if !found {
// still not found? print the device
print!("{}:{}", lock.devmaj, lock.devmin);
}
println!();
}
}
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